mirror of
https://github.com/bluekitchen/btstack.git
synced 2025-01-09 06:46:36 +00:00
258 lines
9.4 KiB
C
258 lines
9.4 KiB
C
/*********************************************************************
|
|
* SEGGER Microcontroller GmbH *
|
|
* The Embedded Experts *
|
|
**********************************************************************
|
|
* *
|
|
* (c) 1995 - 2018 SEGGER Microcontroller GmbH *
|
|
* *
|
|
* www.segger.com Support: support@segger.com *
|
|
* *
|
|
**********************************************************************
|
|
* *
|
|
* SEGGER RTT * Real Time Transfer for embedded targets *
|
|
* *
|
|
**********************************************************************
|
|
* *
|
|
* All rights reserved. *
|
|
* *
|
|
* SEGGER strongly recommends to not make any changes *
|
|
* to or modify the source code of this software in order to stay *
|
|
* compatible with the RTT protocol and J-Link. *
|
|
* *
|
|
* Redistribution and use in source and binary forms, with or *
|
|
* without modification, are permitted provided that the following *
|
|
* conditions are met: *
|
|
* *
|
|
* o Redistributions of source code must retain the above copyright *
|
|
* notice, this list of conditions and the following disclaimer. *
|
|
* *
|
|
* o Redistributions in binary form must reproduce the above *
|
|
* copyright notice, this list of conditions and the following *
|
|
* disclaimer in the documentation and/or other materials provided *
|
|
* with the distribution. *
|
|
* *
|
|
* o Neither the name of SEGGER Microcontroller GmbH *
|
|
* nor the names of its contributors may be used to endorse or *
|
|
* promote products derived from this software without specific *
|
|
* prior written permission. *
|
|
* *
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND *
|
|
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, *
|
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF *
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *
|
|
* DISCLAIMED. IN NO EVENT SHALL SEGGER Microcontroller BE LIABLE FOR *
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR *
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT *
|
|
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; *
|
|
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE *
|
|
* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH *
|
|
* DAMAGE. *
|
|
* *
|
|
**********************************************************************
|
|
---------------------------END-OF-HEADER------------------------------
|
|
File : SEGGER_RTT_Syscalls_SES.c
|
|
Purpose : Reimplementation of printf, puts and __getchar using RTT
|
|
in SEGGER Embedded Studio.
|
|
To use RTT for printf output, include this file in your
|
|
application.
|
|
Revision: $Rev: 12804 $
|
|
----------------------------------------------------------------------
|
|
*/
|
|
#if (defined __SES_ARM) || (defined __CROSSWORKS_ARM)
|
|
|
|
#include "SEGGER_RTT.h"
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include "limits.h"
|
|
#include "__libc.h"
|
|
#include "__vfprintf.h"
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Defines, configurable
|
|
*
|
|
**********************************************************************
|
|
*/
|
|
//
|
|
// Select string formatting implementation.
|
|
//
|
|
// RTT printf formatting
|
|
// - Configurable stack usage. (SEGGER_RTT_PRINTF_BUFFER_SIZE in SEGGER_RTT_Conf.h)
|
|
// - No maximum string length.
|
|
// - Limited conversion specifiers and flags. (See SEGGER_RTT_printf.c)
|
|
// Standard library printf formatting
|
|
// - Configurable formatting capabilities.
|
|
// - Full conversion specifier and flag support.
|
|
// - Maximum string length has to be known or (slightly) slower character-wise output.
|
|
//
|
|
// #define PRINTF_USE_SEGGER_RTT_FORMATTING 0 // Use standard library formatting
|
|
// #define PRINTF_USE_SEGGER_RTT_FORMATTING 1 // Use RTT formatting
|
|
//
|
|
#ifndef PRINTF_USE_SEGGER_RTT_FORMATTING
|
|
#define PRINTF_USE_SEGGER_RTT_FORMATTING 0
|
|
#endif
|
|
//
|
|
// If using standard library formatting,
|
|
// select maximum output string buffer size or character-wise output.
|
|
//
|
|
// #define PRINTF_BUFFER_SIZE 0 // Use character-wise output
|
|
// #define PRINTF_BUFFER_SIZE 128 // Default maximum string length
|
|
//
|
|
#ifndef PRINTF_BUFFER_SIZE
|
|
#define PRINTF_BUFFER_SIZE 128
|
|
#endif
|
|
|
|
#if PRINTF_USE_SEGGER_RTT_FORMATTING // Use SEGGER RTT formatting implementation
|
|
/*********************************************************************
|
|
*
|
|
* Function prototypes
|
|
*
|
|
**********************************************************************
|
|
*/
|
|
int SEGGER_RTT_vprintf(unsigned BufferIndex, const char * sFormat, va_list * pParamList);
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Global functions, printf
|
|
*
|
|
**********************************************************************
|
|
*/
|
|
/*********************************************************************
|
|
*
|
|
* printf()
|
|
*
|
|
* Function description
|
|
* print a formatted string using RTT and SEGGER RTT formatting.
|
|
*/
|
|
int printf(const char *fmt,...) {
|
|
int n;
|
|
va_list args;
|
|
|
|
va_start (args, fmt);
|
|
n = SEGGER_RTT_vprintf(0, fmt, &args);
|
|
va_end(args);
|
|
return n;
|
|
}
|
|
|
|
#elif PRINTF_BUFFER_SIZE == 0 // Use standard library formatting with character-wise output
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Static functions
|
|
*
|
|
**********************************************************************
|
|
*/
|
|
static int _putchar(int x, __printf_tag_ptr ctx) {
|
|
(void)ctx;
|
|
SEGGER_RTT_Write(0, (char *)&x, 1);
|
|
return x;
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Global functions, printf
|
|
*
|
|
**********************************************************************
|
|
*/
|
|
/*********************************************************************
|
|
*
|
|
* printf()
|
|
*
|
|
* Function description
|
|
* print a formatted string character-wise, using RTT and standard
|
|
* library formatting.
|
|
*/
|
|
int printf(const char *fmt, ...) {
|
|
int n;
|
|
va_list args;
|
|
__printf_t iod;
|
|
|
|
va_start(args, fmt);
|
|
iod.string = 0;
|
|
iod.maxchars = INT_MAX;
|
|
iod.output_fn = _putchar;
|
|
SEGGER_RTT_LOCK();
|
|
n = __vfprintf(&iod, fmt, args);
|
|
SEGGER_RTT_UNLOCK();
|
|
va_end(args);
|
|
return n;
|
|
}
|
|
|
|
#else // Use standard library formatting with static buffer
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Global functions, printf
|
|
*
|
|
**********************************************************************
|
|
*/
|
|
/*********************************************************************
|
|
*
|
|
* printf()
|
|
*
|
|
* Function description
|
|
* print a formatted string using RTT and standard library formatting.
|
|
*/
|
|
int printf(const char *fmt,...) {
|
|
int n;
|
|
char aBuffer[PRINTF_BUFFER_SIZE];
|
|
va_list args;
|
|
|
|
va_start (args, fmt);
|
|
n = vsnprintf(aBuffer, sizeof(aBuffer), fmt, args);
|
|
if (n > (int)sizeof(aBuffer)) {
|
|
SEGGER_RTT_Write(0, aBuffer, sizeof(aBuffer));
|
|
} else if (n > 0) {
|
|
SEGGER_RTT_Write(0, aBuffer, n);
|
|
}
|
|
va_end(args);
|
|
return n;
|
|
}
|
|
#endif
|
|
|
|
/*********************************************************************
|
|
*
|
|
* Global functions
|
|
*
|
|
**********************************************************************
|
|
*/
|
|
/*********************************************************************
|
|
*
|
|
* puts()
|
|
*
|
|
* Function description
|
|
* print a string using RTT.
|
|
*/
|
|
int puts(const char *s) {
|
|
return SEGGER_RTT_WriteString(0, s);
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* __putchar()
|
|
*
|
|
* Function description
|
|
* Write one character via RTT.
|
|
*/
|
|
int __putchar(int x, __printf_tag_ptr ctx) {
|
|
(void)ctx;
|
|
SEGGER_RTT_Write(0, (char *)&x, 1);
|
|
return x;
|
|
}
|
|
|
|
/*********************************************************************
|
|
*
|
|
* __getchar()
|
|
*
|
|
* Function description
|
|
* Wait for and get a character via RTT.
|
|
*/
|
|
int __getchar() {
|
|
return SEGGER_RTT_WaitKey();
|
|
}
|
|
|
|
#endif
|
|
/****** End Of File *************************************************/
|